Pyronema omphalodes (Bull. ex St.-Amans) Fuckel
no common name
Pyronemataceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
no common name
Pyronemataceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Photograph
Species Information
Summary:
Features include confluent masses of minute orange cushion-shaped fruitbodies surrounded by cobwebby mycelium, growth on burned or sterilized soil, and microscopic characters. Hansen, L.(1) gives this as synonym of Pyronema confluens (Pers.) Tul. & C. Tul.
Microscopic:
spores 10-13 x 5-8 microns, elliptic, smooth, colorless, 1-seriate, asci 8-spored, cylindric or nearly cylindric, 150 x 10-14 microns; paraphyses "rather stout, very slightly enlarged above, reaching a diameter of 6-7 microns at their apices, filled with orange granules", (Seaver), spores 11-15 x 6.5-8.5 microns, elliptic, smooth, without oil droplets; asci up to 150 x 15 microns, not turning blue with iodine; paraphyses simple, slightly clavate, tips 3-4 microns wide, (Dennis), spores 11-15 x 6.5-8.5 microns (Breitenbach), spores 14-16.5 x 8-9.5 microns, fruitbodies without hairs, (Hansen, L.)
Notes:
Pyronema omphalodes is found in BC, WA, ID, AB, CA, and UT, (Larsen), Europe, Australia, and probably world-wide (Seaver), and specifically in the United Kingdom (Dennis), and Denmark, Finland, Norway, and Sweden, (Hansen, L.).
Habitat and Range
SIMILAR SPECIES
Pyronema domesticum differs especially by larger spores 15-17 x 10-11.5 microns. Its color tends toward salmon-pink (but varies from orange-red to smoked-salmon-color), (Breitenbach(1)). P. domesticum has larger spores 16-20 x 10-12 microns, and apothecia have microscopic pointed hairs, (Hansen, L.(1)). P. domesticum "is highly variable in color, often ranging from red to pink, salmon, ivory, and pure white within a single collection. It is characterized by definite hairs on the exterior surface of the fruitbodies, particularly near the margin." (Beug(3)). In North America the greenhouse invader is Pyronema domesticum, although P. omphalodes has been found in greenhouses in Japan, (Beug(3)). Iodophanus carneus is usually on dung, wet rags, etc. but according to Beug(3) occurs in burn areas. I. carneus is whitish, yellowish, or pinkish, has a pubescent exterior that later becomes bald, and has delicately warted [use oil immersion] or wrinkled spores that measure 17-22 x 10-12 microns, (Beug(3)). Anthracobia species have tufts of brown hairs on the exterior, may be closely packed but are not confluent, and lack the conspicuous white cobwebby subiculum of P. omphalodes. See also SIMILAR section of Anthracobia macrocystis and Anthracobia melaloma.Habitat
on burned places, in greenhouses on steamed soil or soil that has been sterilized by dry heat, (Seaver), on burned ground, throughout the year, (Dennis), already one to two weeks after a burn, fruiting all year, (Hansen, L.)
Synonyms
Synonyms and Alternate Names:
Corticium fusisporum Cooke & Ellis